Mourners in Russia attend a religious service marking 40 days since the attack on a concert hall in Moscow's outskirts that killed more than 140 people. A priest conducts a service for the victims of the attack at the makeshift memorial near the Crocus City Hall concert venue where attendees brought flowers, paintings and stuffed toys. Nina Badlo says it was important for her to attend the service to show that "we are one united family, that we cannot be defeated." More than 140 people were killed when gunmen stormed the Crocus City Hall concert venue on the outskirts of Moscow on March 22 and set fire to the building. Islamic State (IS) has claimed responsibility for the deadliest attack in Russia for two decades. IMAGES AND SOUNDBITES